Inking mechanism fob



L. A. SCHMIDT. INKING'MECHANISM ron men srscn PRINTING mcumas.

APPLICATION HLED FEB. 5. l9.

Patented Sept. 30,

INVENTOR.

UNITED STATES PATENT OFFICE.

LOUIS A. SCHMIDT, OF NEW YORK, N. Y., ASSIGNOR TO B. HOE AND 00., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

INKING- MECHANISM FOR HIGH-SPEED PRINTING-MACHINES.

Application filed February 5, 1917.

To all whom it may concern:

Be it known that I, LoUIs A. SCHMIDT, a citizen of the United States, residin at New York city, county of Kings, and tate of New York, have invented certain new and useful Improvements in Inkin Mechanism for Hi hSpeed Printingachines, fully describe and represented in the following specification and the accompanying drawings, forming a part of the same.

This 1nvention relates to certain improvements in high speed inking mechanism for fast rotary printing machines.

In this class of machines there are usually employed a distributing cylinder which is driven at the surface speed of the form member of the couple, this speed in fastrunning web machines, such as newspaper machines, being very high. Ink is supplied to this distributing cylinder from a fountain roll, which necessarily has a very much lower speed by means of a vibrating ductor roll, the roll vibratin from the fountain roll to the cylinder. 'Ihese vibrating rolls, to deliver their ink to the distributing cylinder, have to be in contact therewith, and are brought up to the high speed of this cylinder. This results, when the ductor is vi brated from the distributing cylinder to the slow-running fountain roll, in a very severe shock or jar, both to the ductor and to the fountain roll, causin ra id wear of the ductor roll and other isa vantages.

It is the special object of the resent invention to provide a, high speed in mg mechanism for fast-running rotary machines which will reduce this shock or jar, both to the ductor roll and the fountain roll, positively controlling the s eeds of the ductor and fountain rolls within limits which will avoid this shock or strain to an undue exmuch of an inking mechanism as is necessa for an understanding of the invention.

eferring now to thedrawing, the invention is illustrated in connection witha rotary printing machine employing printing couples the members of which are cylinders,

Specification of Letters Patent.

Patented Sept. 30, 1919.

Serial No. 146,664.

the form cylinder being marked 1 and the impression cylinder 2, though it will be understood that the invention, as to certain of 1ts features, is intended to, and may, be employed with machines in which the printing couples may take different forms.

As is usual in inking mechanism of the type referred to, ink is distributed to the form cylinder 1 by distributing rolls 3, 4 which take ink from large distrlbuting cyllnder 5, this cylinder being driven in the construction shown through suitable gearing 6, 7 and 8 from the form cylinder and at the same surface speed. Ink is sup-plied to the mechanism from an ink fountain 9 having fountain roller 10 which is driven as usual at a slow rate of speed through suitable gears 11, 12 and worm gearing 13 from the shaft 14 of the large distributing cyl- 1nder 5.

Machines constructed in accordance with the invention will include ductor rolls for transferrin the ink from the fountain roll to the distributing cylinder, and, in accordance with the invention, means will be provided whereby these ductor rolls will have their surface speed reduced and positivel controlled from that of the distributing cy lnder so that when contact with the fountain roll is made the strain or shock above referred to will be greatly minimized. While th 1s may be efi'ected in various ways, there Wlll preferably be provided what may be termed an intermediate transfer cylinder 15 located between the large distributing cylinder 5 and the fountain roll 10, this cylinder being positively driven at a controlled surface s eed as much less than that of the distributing cylinder as may be necessary or desired, being, in the best constructions, driven therefrom through a train of reducing gears 16, 17 and ,18, this gearing bein such, together with the gearing 11, 12 an 13, that the intermediate transfer cylinder 15 is driven at a surface speed about midway between that of the distributing cylinder 5 and the fountain roll 10, this speed having been found in practice to be very efficient.

Ink is delivered to the intermediate distributing cylinder 15 from the fountain roll by means of a ductor roll 19 which, in the present instance, is a vibrating roll, being vibrated between the fountain roll and the transfer cylinder by the usual rod and arm construction 20 from a cam shaft 21 suitably mounted in the frame of the machine. From the inlernuuliule transfer cylinder ink is delivered to the distributing cylinder 5 by a second duetor roll 22 which, in the present instance, is likewise a vibrating roll, being vibrated by the usual rod and arm construction 23.

Viith this construction it will be seen that when the doctor roll 22 is brought into contact with the transfer cylinder 15, the speed of the ductor, then running at the speed of the cylinder 5, is only reduced to the slower surface speed of this cylinder, and theshock or strain is very much less than if this roll were vibrated from the distributing cylindcr to the slow-running fountain roll it). So, also, the speed of the ductor roll 1%? 1s only that of the speed of the intermedlate cvlinder 15, and this is very much less than that of the distributing cylinder 5. Thus a snmoth-runnin31 mechanism provided, in which the shocks and strains on the parts are greatly reduced, with consequent increase of life in the rolls. Furthermore, the surface speed of the intermediate cylinder 15 can be regulated as desired through the reducing gearing, and thus the speed of the doctor roll 19, which acts directly on the fountain roll, positively controlled within desired limits.

[While the invention has been shown in a preferred form, it will be understood that certain changes and variations 1n the particular parts and arrangements can be made without departing therefrom.

What is claimed is 2- I 1. In an inking mechanism for printing machines, the combination with a form member, of a high-speed distributing cylinder, a slow-running fountain roll, a ductor roll intermediate the distributing cylinder and the fountain roll and carrying ink therefrom, and positively operating means forcausing theductor roll to run at a controlled surface speed slower than that of the distributing cylinder, but higher than that of the fountain roll.

2. In aninking mechanism for printlng' machines, the combination with a form member of a high speed distributing cylinder, a s ow-runnmg fountain roll, a ductor roll taking ink therefrom, an ink transfer cylinder to which ink is delivered from the ductor roll and located between it and the distributing cylinder, means for positively driving the transfer cylinder at a controlled surface speed less than that of the distributing cylinder, and means for distributing ink from the transfer cylinder to the distributing cylinder. r

3. In an inking mechanism for printin machines the combination with a form 0y inder, of a distributing cylinder driven therefrom at the same surface speed. a slowrunning fountain roll, an inktransferring cylinder from which ink is delivered to the distributing cylinder located between the distributing cylinder and the fountain, means for positively driving the transfer cylinder from the distributing cylinder but at a less surface speed, and a ductor roll transferring ink from the fountain roll to the transfer cylinder.

4. In an inking mechanism for printing machines, the combination with a form cylinder, of u distributing cylinder driven therefrom at the same surface speed, a slowrunning fountain roll, an ink transferring cylinder located between the distributing cylinder and the fountain roll, means for driving the transfer cylinder at a surface speed about midway between that of the fountain roll and the distributing cylinder, :1 ductor roll transferring ink from the fountain roll to the transfer cylinder, and. means for distributing ink from the transfer cylin der to the distributing cylinder.

5. In an inking mechanism for printing machines, the combination with a form cylinder, of a distributing cylinder driven therefrom at the same surface speed, a slowrunning fountain roll, an ink transferring cylinder from which ink is delivered to the distributing cylinder located between the distributing cylinder and the fountain roll, means for positivel driving the transfer cylinder from the distributing cylinder but at a less surface speed, a ductor roll transferring ink from the fountain roll to the transfer cylinder, and a second ductor roll transferrin ink from the transfer cylinder to the distri uting cylinder.

6. In an inking mechanism for printing machines, the combination with a form cylinder, of a distributing cylinder driven therefrom at the same surface speed, a slowrunning fountain roll, an ink transferring cylinder located between the distributing cylinder and the fountain roll, means for driving the transfer c linder at a surface speed about midway etween that of the fountain roll and" the distributing cylinder, a ductorroll transferrin ink from the fountain roll to the trains or cylinder, and a second ductor roll transferring ink from the transfer cylinder to the distributing cylinder.

In an inking mechanism for printina machines, the combination with a form cy inder, of a distributing cylinder driven therefrom at the same surface speed, a slowrunning fountain roll, an ink transferring c linder from which ink is delivered to the str ibuting cylinder located between the distributing cylinder and the fountain roll, reduced 5 eed gearing for driving the transfer cylin r from the distributing cylinder whereby the transfer cylinder is driven at a less surface speed, and a ductor roll trans ferring ink from the fountain roll to the transfer cylinder.

8. In an inking mechanism for printing machines, the combination with a form cylinder, of a distributing therefrom at the same surface speed, a fountain roll, connections including a worm and worm-wheel for driving the fountain roll at a slow rate of speed from the distributing cylinder, an ink transfer cylinder located between the distributing cylinder and the fountain roll, reduced speed gearing for driving the transfer cylinder from the distributing cylinder at a reduced surface speed, a ductor roll transferring ink from the fountain roll to the transfer cylinder, and a second ductor roll for transferring ink from the transfer cylinder to the distributing cylinder.

9. In an inking mechanism for printing machines, the combination with a form member, of a high speed distributing cylinder, a slow runnlng fountain roll, ink transferring devices intermediate the distributing cylinder and fountain roll and transferrin ink from the roll to the cylinder, and posi- Oopie: of this patent may be obtained for flve cents each, by addressing the cylinder driven tively operating means for causing certain of the transferring devices to run at a con trolled surface speed slower than that of the distributing cylinder, but higher than that of the fountain roll.

10. The combination with a ductor roller and form'rollers, both free to rotate, of a series of rotary ink distributing and conveying rolls between them, and means for constantly driving certain of said rolls at different progresslve surface velocities.

11. In an inking mechanism the combination of a source of supply, a printing cylinder and a series of forwarding and distributing rolls connecting the two, a plurality of which have surface velocities greater than the rolls from which they receive their ink.

12. In an inking device, the combination with a printing cylinder, of a series of rolls rotatable at di erent surface velocities, that of each being less than that of one between it and said printing cylinder.

In testimony whereof, I have hereunto set my hand.

LOUIS A. SCHMIDT.

Commissioner of Patents,

Washington, D. 0. 

